A printer system includes a host computer, K, C, M, and Y printer elements for four colors, a paper feeding section, and a head cleaning section. The printer elements each include a head controller and print head groups. The head controllers are connected to the host computer via SCSI interfaces in a...http://www.google.de/patents/US6902254?utm_source=gb-gplus-sharePatent US6902254 - Printer system which uses a plurality of print heads and which controls the print heads with a simple configuration to achieve high accuracy image printing